Sodium Carbonate → 3-amino-5-(2-chlorophenyl)-7-(5-(morpholin-4-yl)pyridin-2-yl)-1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one

HRID 1526358Notes

Reaction equation

HRID 1526358 reaction equation
[NH2:1][C:2]1[C:6]2[C:7](=[O:19])[N:8]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[Cl:18])[CH:9]=[C:10](Br)[C:5]=2[NH:4][N:3]=1.CC1(C)C(C)(C)OB(B2OC(C)(C)C(C)(C)O2)O1.C([O-])(=O)C.[K+].Br[C:44]1[N:49]=[CH:48][C:47]([N:50]2[CH2:55][CH2:54][O:53][CH2:52][CH2:51]2)=[CH:46][CH:45]=1.C(=O)([O-])[O-].[Na+].[Na+]>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O.CN(C)C=O>[NH2:1][C:2]1[C:6]2[C:7](=[O:19])[N:8]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[Cl:18])[CH:9]=[C:10]([C:44]3[CH:45]=[CH:46][C:47]([N:50]4[CH2:51][CH2:52][O:53][CH2:54][CH2:55]4)=[CH:48][N:49]=3)[C:5]=2[NH:4][N:3]=1

Participants

9

Reactant 5

HCID 10340Sodium CarbonateHCID 517044Potassium AcetateHCID 2733548Bis(pinacolato)diboraneHCID 230921314-(6-Bromopyridin-3-yl)morpholineHCID 1177700033-amino-7-bromo-5-(2-chlorophenyl)-1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one

Product 1

HCID 1177697773-amino-5-(2-chlorophenyl)-7-(5-(morpholin-4-yl)pyridin-2-yl)-1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-oneYield 4.8%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 3-amino-7-bromo-5-(2-chlorophenyl)-1,5-dihydro-4H-pyrazolo[4,3-c]pyridin-4-one obtained in Step B of Example 18 (300 mg), 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi-1,3,2-dioxaborolane (269 mg), (1,1′-bis(diphenylphosphino)ferrocene)dichloropalladium(II) (21.5 mg), potassium acetate (173 mg) and N,N-dimethylformamide (4.0 mL) was stirred overnight at 110° C. under argon atmosphere. The reaction mixture was cooled to room temperature, 4-(6-bromopyridin-3-yl)morpholine (430 mg), aqueous sodium carbonate solution (2 M, 0.883 mL) and tetrakis(triphenylphosphine)palladium(0) (102 mg) were added thereto, and the reaction mixture was stirred at 120° C. for 5 hr under argon atmosphere. The reaction mixture was cooled to room temperature, water was added thereto, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (basic silica gel, methanol/ethyl acetate). The obtained rough-purified product was crystallized from methanol/ethyl acetate/hexane to give the title compound (18.0 mg).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. stirringthe reaction mixture was stirred at 120° C. for 5 hr under argon atmosphere
  3. temperatureThe reaction mixture was cooled to room temperature
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe extract was washed with water and saturated brine
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customthe solvent was evaporated under reduced pressure
  8. customThe residue was purified by silica gel chromatography (basic silica gel, methanol/ethyl acetate)
  9. customThe obtained rough-purified product
  10. customwas crystallized from methanol/ethyl acetate/hexane

Sources & evidence

ORD record
ord-16f742ffbbfc444692d52d8dc2c66694
Source dataset
uspto-grants-2015_07
Patent number
US09085578B2

Reaction notes

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